船用电缆的铠装用作保护接地导体分析

Analysis of Armor of Marine Cable Used as Protective Earthing Conductor

国际电工委员会(IEC)标准中要求船舶电气设备的所有可触及金属部件(载流部件除外)均应接地。通过解读IEC标准和船级社规范对保护接地导体的要求,并计算船用电缆编织铠装的截面积,在满足保护接地导体截面积要求的前提下,对船用电缆进行合理的选型。

IEC standards require that all accessible metal parts of the electrical equipment,other than currentcarrying ones,are to be earthed.By interpreting the requirements of IEC standards and classification society specifications for the protective earthing conductor,the cross-sectional area of braided armor layer of the marine cable was calculated,the marine cable was reasonably selected on the premise of meeting the cross-section area of protective earthing conductor.